First of all, we need to prepare a mobile phone and make sure it is connected to the internet. Open WeChat, select me, and click on the profile information of my personal avatar.

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After we input personal information, we can see more of this option in the page displayed on the mobile phone, and then we can choose it more directly.

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After we enter more, we can see an option with personalized signature on the display page of our mobile phone, so we click in.

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Enter the personalized signature, edit the personalized signature, and then click Save to return to the previous information and view the new personalized signature.